ring: check flag settings for future proofing

[dpdk.git] / doc / guides / sample_app_ug / flow_filtering.rst

diff --git a/doc/guides/sample_app_ug/flow_filtering.rst b/doc/guides/sample_app_ug/flow_filtering.rst
index 02fc675..5e5a6cd 100644 (file)
--- a/doc/guides/sample_app_ug/flow_filtering.rst
+++ b/doc/guides/sample_app_ug/flow_filtering.rst
@@ -193,7 +193,13 @@ application is shown below:
                    }
           }
 
-           rte_eth_promiscuous_enable(port_id);
+           ret = rte_eth_promiscuous_enable(port_id);
+           if (ret != 0) {
+                   rte_exit(EXIT_FAILURE,
+                           ":: cannot enable promiscuous mode: err=%d, port=%u\n",
+                           ret, port_id);
+           }
+
            ret = rte_eth_dev_start(port_id);
            if (ret < 0) {
                    rte_exit(EXIT_FAILURE,
@@ -278,7 +284,12 @@ We are setting the RX port to promiscuous mode:
 
 .. code-block:: c
 
-   rte_eth_promiscuous_enable(port_id);
+   ret = rte_eth_promiscuous_enable(port_id);
+   if (ret != 0) {
+        rte_exit(EXIT_FAILURE,
+                 ":: cannot enable promiscuous mode: err=%d, port=%u\n",
+                 ret, port_id);
+   }
 
 The last step is to start the port.
 
@@ -502,4 +513,3 @@ The last part of the function is to validate the rule and create it.
    int res = rte_flow_validate(port_id, &attr, pattern, action, &error);
    if (!res)
         flow = rte_flow_create(port_id, &attr, pattern, action, &error);
-